UI elements flicker with Editor on a second monitor and Game window on the main retina display

Steps to reproduce:
1) Open the attached project.
2) Place the Editor window on a second monitor.
3) Detach the Game tab from the Editor and place it on the main retina display.
4) Press 'Play'.
5) Click on the Scene view or Game view.

The UI button starts flickering and gets offset from the center of the Game window with each click and then returns.

Reproduced on:
5.5.0a5, 5.4.0f3

Did not reproduce:
5.3.6p2, 5.2.4f1

Machine used to reproduce the issue:
Main display: iMac 27" 5120x2880 (downscaled to 2560x1440)
Second display: 1920x1080

Still occurs for me on Unity 5.6.1p1. Makes working with two monitors basically impossible.

spierce

Apr 12, 2017 21:29

This still occurs for me on 5.5.0p1, on Mac OSX El Capitan.

pkiriakou

Jan 07, 2017 12:22

I have the same issue in 5.5.0f3

doven

Nov 04, 2016 22:13

Issue still occurs in 5.4.2f2

hololabs

Sep 06, 2016 23:21

To add to this: the flickering occurs when ANY Unity window updates on the laptop's retina screen. For example, it occurs if you move the Profiler to that screen (but keep the Game window on the 2nd screen), or as you interact with any inspector on the laptop screen.